non periodic table definitions

Question 1

matter

Answer 1

anything that takes up space and has mass: solid, liquid, gas

Question 2

particle theory

Answer 2

1. all matter is made up of tiny particles that have empty spaces between them
2. different substances are made up of different kinds of particles
3. particles attract each other
4. particles increase/decrease movement based on temperature
5. particles are in a constant random motion

Question 3

physical properties

Answer 3

are determined without changing the composition of that substance

Question 4

chemical properties

Answer 4

are determined by changing the composition of a substance, the original substance is rearranged

Question 5

qualitative properties

Answer 5

do not provide numerical information: 5 sense, optical clarity, brittleness, malleability, ductility

Question 6

quantitative properties

Answer 6

measured and has a numerical value: conductivity, density, viscosity, solubility, hardness, melting/boiling/freezing point

Question 7

physical change

Answer 7

a change in which the composition of the substance remains unaltered and no new substance (s) are formed: change of state

Question 8

chemical change

Answer 8

always accompanied by a change in the starting substance (s) and the production of new substance (s): colour/odour change, bubbles, new solid, light/temperature change

Question 9

density

Answer 9

ratio of mass to volume

Question 10

mechanical mixture

Answer 10

a mixture in which the substances in it are distinguishable from each other

Question 11

solution

Answer 11

looks like a pure substance but contains more than one type of particle, cannot visibly distinguish